Frost dates in Coralville, IA
The average last spring frost in Coralville is around April 23 and the first fall frost is around October 15. That gives Coralville an average growing season of about 175 days.
Last spring frost
| Early (10% chance after) | April 13 |
|---|---|
| Average (50%) | April 23 |
| Late (90%) | May 7 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 15 |
| Late (90% chance before) | October 28 |